Vulnerability Details : CVE-2017-9226
Potential exploit
An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.
Vulnerability category: Memory Corruption
Products affected by CVE-2017-9226
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:oniguruma_project:oniguruma:6.2.0:*:*:*:*:*:*:*
Threat overview for CVE-2017-9226
Top countries where our scanners detected CVE-2017-9226
Top open port discovered on systems with this issue
80
IPs affected by CVE-2017-9226 523,173
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2017-9226!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2017-9226
0.32%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-9226
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2017-9226
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-9226
-
https://github.com/kkos/oniguruma/issues/55
Heap corruption in next_state_val() in 15 encodings · Issue #55 · kkos/oniguruma · GitHubExploit;Issue Tracking;Third Party Advisory
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https://access.redhat.com/errata/RHSA-2018:1296
RHSA-2018:1296 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/101244
Oniguruma Multiple Memory Corruption VulnerabilitiesThird Party Advisory;VDB Entry
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https://github.com/kkos/oniguruma/commit/f015fbdd95f76438cd86366467bb2b39870dd7c6
fix #55 : Byte value expressed in octal must be smaller than 256 · kkos/oniguruma@f015fbd · GitHubPatch;Third Party Advisory
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https://github.com/kkos/oniguruma/commit/b4bf968ad52afe14e60a2dc8a95d3555c543353a
fix #55 : check too big code point value for single byte value in nex… · kkos/oniguruma@b4bf968 · GitHubPatch;Third Party Advisory
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